Data annotation workshop

[Laurent Michel]

Dear VO,

In November, we sent around the message quoted below announcing the setting up of a workshop focus on the strategy to adopt for the data annotation.
Nothing happened publicly since that time for different reasons, but the project has made good progress nevertheless.

We propose to resume the operations with the following roadmap:
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- Opening a public repository where use cases have been collected.
- Running a short meeting to present the process
  * This meeting will take place by the end of the next week
      https://evento.renater.fr/survey/dm-running-meeting-nyq6z8mr <https://evento.renater.fr/survey/dm-running-meeting-nyq6z8mr>
- Let people  about one month to look or to provide input
- Collecting feedback from data providers, data annoters, data consumers or anybody else
- Running a virtual workshop
- Presenting the outcome at the next V-Interop
 
The repository is available here

    https://github.com/ivoa/dm-usecases <https://github.com/ivoa/dm-usecases>

- Most of the use cases have been taken out  from the Source DM proposal (2016)
- Some of the MANGO proposals have been added
- Each use case is located in specific directory containing 
  - A short description (README)
  - A VOTable  matching the case
  - One subdirectory per proposal 

I have included proposals based on the Mango/ModelInstInVot tandem I’m working on as a workable solution and as a way
to push forward the concrete outcomes of the ideas presented for more than one year but, obviously, any other proposals
are really welcome.

Laurent & Jesus

Laurent Michel
SSC XMM-Newton
Tél : +33 (0)3 68 85 24 37
Fax : +33 (0)3 )3 68 85 24 32
Université de Strasbourg <http://www.unistra.fr>
Observatoire Astronomique
11 Rue de l'Université
F - 67200 Strasbourg

> https://ivoa.slack.com/archives/C013EH5C649/p1606313182002100 <https://ivoa.slack.com/archives/C013EH5C649/p1606313182002100>
> During last Interop we had a session, requested by Markus, that aimed at opening 
> a wide discussion on both Measurements and Coordinate models and possibly at 
> refining their usages.
> 
>   https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpNov2020DM <https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpNov2020DM>
> 
> This came after a long discussion on the mailing list, related to the necessity of keeping 
> or not a tight dependancy between Measurements and Coordinates. 
> It has also been suggested that product models (e.g. CubeDM ) could be replaced with 
> domain related components.
> 
> Many people have participated to the discussion with many positive contributions. 
> Although the goal of this message is not to report on that meeting, we do need to note 
> a few points:
> - There is a clear demand for using models
> - There is a clear demand for the models to be simple and modular.
> - The distinction between what is modelling and what is serialisation is unclear.
> 
> The need for a concrete solution for annotating catalog data, that resurfaced last week, 
> has been tackled by the WG for a couple of years along with the development of 
> Measurements/Coordinates models.
> - 2018: Discussions have been engaged on this topic after a hands-on session in Victoria. 
>             https://wiki.ivoa.net/twiki/bin/view/IVOA/SourceCatalogs <https://wiki.ivoa.net/twiki/bin/view/IVOA/SourceCatalogs>
> - 2019: We asked data providers and client developers to present their needs in a dedicated 
>             session at Paris
>             https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpMay2019DM <https://wiki.ivoa.net/twiki/bin/view/IVOA/InterOpMay2019DM>
> 
> After these 2 surveys the scope of the model usage has been exposed in Virtual May and 
> we have been working on MANGO (model for source data with some MC adaptations ) 
> that has been sketched in both Groningen and virtual-May and then presented last week.
> 
>     https://wiki.ivoa.net/internal/IVOA/InterOpNov2020DM/Mango_interopFall2020.pdf <https://wiki.ivoa.net/internal/IVOA/InterOpNov2020DM/Mango_interopFall2020.pdf>
> 
> To continue this action we propose to organise a virtual workshop (initial proposal by Tom 
> to the TCG) with the hope of getting a widely accepted framework.
> 
> The idea is not to start afresh but to give to the participants the opportunity of matching 
> their needs with the current proposals.
> To get a clear picture of what has to be done, we propose to work with a variety concrete 
> use cases and data samples provided by interested people. 
> We will then take a bit of time to exercice different options on this material before organising 
> the meeting where everyone will be able to present their own conclusion.
> 
> Details of this action will be released soon, unless someone has a clear veto.
> 
> Regards
> 
> Laurent - Jesus
> 
> PS You will be able to follow the topic on  #data-models at Slack





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